Shaun Cassidy is an American singer, actor, writer and producer. He has created and/or produced a number of television series including "American Gothic" (produced with Sam Raimi), "Roar" (starring a then unknown Heath Ledger), "Cold Case," "Cover Me," "The Agency," "Invasion," and "Emerald City." Cassidy wrote and executive produced "Hysteria" for Amazon and serves as executive producer and writer for "New Amsterdam" on NBC.

Cassidy grew up in Los Angeles and New York City. While still in high school, he signed a contract with Warner Brothers records. This led to three multi-platinum albums, numerous top ten hits, and sold-out concerts at every major arena in the country including Houston's Astrodome and New York's Madison Square Garden. Almost concurrently, Cassidy starred in the ABC television series "The Hardy Boys Mysteries." Later, while appearing on Broadway in the hit musical drama "Blood Brothers," he wrote his first television pilot, "American Gothic." When the show debuted, The New York Times called it "The most original new show of the season." In 2020, Cassidy took his one man show "The Magic of a Midnight Sky" to the stage, playing to SRO crowds nationwide, his first live music performance in almost forty years.